/*
 * Copyright 2024-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.cloud.ai.toolcalling.bravesearch;

import com.alibaba.cloud.ai.toolcalling.common.CommonToolCallConstants;
import com.alibaba.cloud.ai.toolcalling.common.JsonParseTool;
import com.alibaba.cloud.ai.toolcalling.common.WebClientTool;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Description;
import org.springframework.http.HttpHeaders;

import java.util.concurrent.ThreadLocalRandom;
import java.util.function.Consumer;

/**
 * @author vlsmb
 */
@Configuration
@EnableConfigurationProperties(BraveSearchProperties.class)
@ConditionalOnProperty(prefix = BraveSearchConstants.CONFIG_PREFIX, name = "enabled", havingValue = "true",
		matchIfMissing = true)
public class BraveSearchAutoConfiguration {

	@Bean(name = BraveSearchConstants.TOOL_NAME)
	@ConditionalOnMissingBean
	@Description("Use brave search engine to query.")
	public BraveSearchService braveSearch(BraveSearchProperties properties, JsonParseTool jsonParseTool) {
		Consumer<HttpHeaders> consumer = headers -> {
			headers.add(HttpHeaders.USER_AGENT, CommonToolCallConstants.DEFAULT_USER_AGENTS[ThreadLocalRandom.current()
				.nextInt(CommonToolCallConstants.DEFAULT_USER_AGENTS.length)]);
			headers.add(HttpHeaders.CONNECTION, "keep-alive");
			headers.add(HttpHeaders.ACCEPT, "application/json");
			headers.add("X-Subscription-Token", properties.getApiKey());
		};
		return new BraveSearchService(
				WebClientTool.builder(jsonParseTool, properties).httpHeadersConsumer(consumer).build(), jsonParseTool);
	}

}
